1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * drivers/net/bond/bond_options.h - bonding options
4 * Copyright (c) 2013 Nikolay Aleksandrov <nikolay@redhat.com>
7 #ifndef _NET_BOND_OPTIONS_H
8 #define _NET_BOND_OPTIONS_H
10 #define BOND_OPT_MAX_NAMELEN 32
11 #define BOND_OPT_VALID(opt) ((opt) < BOND_OPT_LAST)
12 #define BOND_MODE_ALL_EX(x) (~(x))
15 * BOND_OPTFLAG_NOSLAVES - check if the bond device is empty before setting
16 * BOND_OPTFLAG_IFDOWN - check if the bond device is down before setting
17 * BOND_OPTFLAG_RAWVAL - the option parses the value itself
20 BOND_OPTFLAG_NOSLAVES = BIT(0),
21 BOND_OPTFLAG_IFDOWN = BIT(1),
22 BOND_OPTFLAG_RAWVAL = BIT(2)
26 * BOND_VALFLAG_DEFAULT - mark the value as default
27 * BOND_VALFLAG_(MIN|MAX) - mark the value as min/max
30 BOND_VALFLAG_DEFAULT = BIT(0),
31 BOND_VALFLAG_MIN = BIT(1),
32 BOND_VALFLAG_MAX = BIT(2)
35 /* Option IDs, their bit positions correspond to their IDs */
38 BOND_OPT_PACKETS_PER_SLAVE,
40 BOND_OPT_ARP_VALIDATE,
41 BOND_OPT_ARP_ALL_TARGETS,
42 BOND_OPT_FAIL_OVER_MAC,
43 BOND_OPT_ARP_INTERVAL,
50 BOND_OPT_NUM_PEER_NOTIF,
53 BOND_OPT_PRIMARY_RESELECT,
55 BOND_OPT_ACTIVE_SLAVE,
57 BOND_OPT_ALL_SLAVES_ACTIVE,
61 BOND_OPT_TLB_DYNAMIC_LB,
62 BOND_OPT_AD_ACTOR_SYS_PRIO,
63 BOND_OPT_AD_ACTOR_SYSTEM,
64 BOND_OPT_AD_USER_PORT_KEY,
65 BOND_OPT_NUM_PEER_NOTIF_ALIAS,
66 BOND_OPT_PEER_NOTIF_DELAY,
74 /* This structure is used for storing option values and for passing option
75 * values when changing an option. The logic when used as an arg is as follows:
76 * - if value != ULLONG_MAX -> parse value
77 * - if string != NULL -> parse string
78 * - if the opt is RAW data and length less than maxlen,
79 * copy the data to extra storage
82 #define BOND_OPT_EXTRA_MAXLEN 16
83 struct bond_opt_value {
88 char extra[BOND_OPT_EXTRA_MAXLEN];
89 struct net_device *slave_dev;
101 /* unsuppmodes is used to denote modes in which the option isn't
104 unsigned long unsuppmodes;
105 /* supported values which this option can have, can be a subset of
106 * BOND_OPTVAL_RANGE's value range
108 const struct bond_opt_value *values;
110 int (*set)(struct bonding *bond, const struct bond_opt_value *val);
113 int __bond_opt_set(struct bonding *bond, unsigned int option,
114 struct bond_opt_value *val,
115 struct nlattr *bad_attr, struct netlink_ext_ack *extack);
116 int __bond_opt_set_notify(struct bonding *bond, unsigned int option,
117 struct bond_opt_value *val);
118 int bond_opt_tryset_rtnl(struct bonding *bond, unsigned int option, char *buf);
120 const struct bond_opt_value *bond_opt_parse(const struct bond_option *opt,
121 struct bond_opt_value *val);
122 const struct bond_option *bond_opt_get(unsigned int option);
123 const struct bond_option *bond_opt_get_by_name(const char *name);
124 const struct bond_opt_value *bond_opt_get_val(unsigned int option, u64 val);
126 /* This helper is used to initialize a bond_opt_value structure for parameter
127 * passing. There should be either a valid string or value, but not both.
128 * When value is ULLONG_MAX then string will be used.
130 static inline void __bond_opt_init(struct bond_opt_value *optval,
131 char *string, u64 value,
132 void *extra, size_t extra_len)
134 memset(optval, 0, sizeof(*optval));
135 optval->value = ULLONG_MAX;
136 if (value != ULLONG_MAX)
137 optval->value = value;
139 optval->string = string;
141 if (extra && extra_len <= BOND_OPT_EXTRA_MAXLEN)
142 memcpy(optval->extra, extra, extra_len);
144 #define bond_opt_initval(optval, value) __bond_opt_init(optval, NULL, value, NULL, 0)
145 #define bond_opt_initstr(optval, str) __bond_opt_init(optval, str, ULLONG_MAX, NULL, 0)
146 #define bond_opt_initextra(optval, extra, extra_len) \
147 __bond_opt_init(optval, NULL, ULLONG_MAX, extra, extra_len)
148 #define bond_opt_slave_initval(optval, slave_dev, value) \
149 __bond_opt_init(optval, NULL, value, slave_dev, sizeof(struct net_device *))
151 void bond_option_arp_ip_targets_clear(struct bonding *bond);
152 #if IS_ENABLED(CONFIG_IPV6)
153 void bond_option_ns_ip6_targets_clear(struct bonding *bond);
156 #endif /* _NET_BOND_OPTIONS_H */